2 FARMERS’ BULLETIN Tai; 
Island, New Jersey, Delaware, and Ohio, and has been reported as 
very destructive in portions of New York, Pennsylvania, Maryland, 
Virginia, West Virginia, Ilinois, Indiana, Kansas, Nebraska, south- 
ern Michigan, and Vermont, but is not destructive in all portions of 
these States. Light sandy regions are greatly preferred by the in- 
sects as breeding grounds, and clay lands, unless near sandy soil, 
are seldom troubled with them. 
FOOD PLANTS AND INJURY. 
For some time after the rose-chafer was first noticed it confined 
its ravages to the blossoms of the rose. There is a record, however, 
of its having been destructive to grapes as early as 1810. In later 
years it has extended its range of food plants until now it is nearly 
Fic. 1.—The rose-chafer (Macrodactylus subspinosus): a, Adult. or beetle; 0b, larva; 
ec, d, mouthparts of larva; e, pupa; f, injury to leaves and blossoms of grape, with 
beetles at work. a, b, e, Much enlarged; c, d, more enlarged; f, slightly reduced. 
(From Marlatt.) 
omnivorous. The rose and grapevine especially suffer from its depre- 
dations, but it is almost equally destructive to fruit, shade, and other 
trees and shrubs. In times of great abundance these insects com- 
pletely destroy flowers and other ornamental plants of many sorts, 
even attacking berries, peas, beans, and nearly all garden fruits and 
vegetables, corn, wheat, and grasses. Almost every form of vegeta- 
tion is devoured. 
The beetles do not confine their ravages to any particular portion 
of a plant, but consume alike blossoms, leaves, and fruit. 
In their attack upon the grape they first devour the blossoms, then 
the leaves, which they completely strip, leaving only a thin network, 
and later the young berries are eaten (figs. 2 and 3). Whole vine- 
